According to wiki reference. If our vacuum was a false vacuum, things can be destroyed when the true vacuum appears. But is there no way or exception for true vacuum to exist that would still have stable things? For example. if the true vacuum were negative (what else is there?).. why would it imply things getting destroyed like the following explanation showed: "If measurements of these particles suggests that our universe lies within a false vacuum of this kind, then it would imply—more than likely in many billions of years[Note 1]—that it could cease to exist as we know it, if a true vacuum happened to nucleate. This is because, if the Standard Model is correct, the particles and forces we observe in our universe exist as they do because of underlying quantum fields. Quantum fields can have states of differing stability, including 'stable', 'unstable', or 'metastable' (meaning, long-lived but capable of being "toppled" in the right circumstances). If a more stable vacuum state were able to arise, then existing particles and forces would no longer arise as they do in the universe's present state. Different particles or forces would arise from (and be shaped by) whatever new quantum states arose."